If in doubt, then your best bet is to go with the exact same part lest you have compatibility issues and possibly damage the set some more.If in doubt, then your best bet is to go with the exact same part lest you have compatibility issues and possibly damage the set some more.

The sensor for the 3632-0172-0189 board isn't available any more. The sensor, which appears to be identical for the 3637-0022-0189 and others is available.The sensor for the 3632-0172-0189 board isn't available any more. The sensor, which appears to be identical for the 3637-0022-0189 and others is available.

Well, it does not look like you have much choice. If the alternate part is not very expensive you can always cross your fingers and see if that does the trick. Hopefully you have menu access from the tv in case the fix does not work. Good luck!Well, it does not look like you have much choice. If the alternate part is not very expensive you can always cross your fingers and see if that does the trick. Hopefully you have menu access from the tv in case the fix does not work. Good luck!

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The failure to IR sensor inside the TV is a very rare case. Check the infrared emission to the remote control first. Check it with fresh batteries. Make sure that it works well, before trying to replace the infrared sensor inside the TV. If you wish to get some details, http://electronicshelponline.blogspot.com/ Pull up older posts.

Replace remote batteries, try a universal remote, and look for a Reset button on your remote. Once you've tried all three things, let us know anything else that you can. All we really know at this point is that your remote isn't working.

Vizio is famous for having main board issues. If you have replaced the IR board the only two other items it could be is a broken wire from the IR to main or the main board has an issue. Nothing else can stop the remote from working provided the remote is working properly.

What you are dealing with is not a bad remote controller, the problem is from your IR Sensor. You will need to replace this IR Sensor. You Vizio TV has a common defect with the IR Sensor. Make sure you order the revised version so you don't encounter this problem again. You can find the IR Sensor here: 3637 0022 0189 0171 1671 0892 Vizio IR Sensor

I just had the same problem fixed. It is an internal problem with the "main board". You have to actually replace it. I am looking into fixing my other one identical to my other one and the identical problem too. Vizio fixed on "out of warranty", but for some reason will not fix the other, I guess I should be thankful, at least I know what the problem is.